Rounder corners

Hi, I tried styling the text input and submit button using one of the codes found in this forum but they don’t seem to work, I’m using the Material design style:

Thanks!

/** Input and textarea **/
.forminator-ui input,
.forminator-ui textarea{
    border-radius: 20px !important;
}

/** Submit button **/
.forminator-ui .forminator-button-submit{
    border-radius: 20px !important;
}